Safety Info Posts

EPA RMP… should the model include the entire quantity of the mixture or just the quantity of the regulated substance present in the mixture?

For the risk management program, where the concentration of the regulated flammable substance in the mixture is one percent or more by weight of the mixture, the entire weight of the mixture must be applied toward the 10,000 pound threshold quantity for the flammable substance unless the owner or operator can demonstrate that the mixture […]

EPA RMP… Is there a required minimum or maximum distance for the distance to endpoint in the worst case release scenario?

The Chemical Accident Prevention Provisions require the completion of a worst-case release scenario analysis (40 CFR §68.25). This analysis includes estimating the greatest distance to endpoint as defined by the parameters in §68.22. Is there a required minimum or maximum distance for the distance to endpoint in the worst case release scenario?

EPA RMP… Does this require the owner or operator to submit an annual update or certification to EPA or the implementing agency?

The owner or operator of a facility who must prepare a Risk Management Plan (RMP) for a Program 3 process is required to develop and implement written operating procedures that provide clear instructions for safely conducting activities involved in each covered process consistent with the process safety information (40 CFR §68.69(a)). The owner or operator

EPA RMP… What are considered industrial buildings, commercial buildings, or recreational areas, and how can they be identified?

Pursuant to the hazard assessment requirements in 40 CFR Part 68, Subpart B, an owner or operator is required to conduct an offsite consequence analysis and analyze a worst-case release scenario and alternative release scenarios as part of a risk management plan (RMP). When completing these scenarios, public receptors need to be identified. A public

EPA RMP… For the five-year accident history, does the owner or operator need to include accidental releases that were only released onto the land or into water?

Pursuant to 40 CFR §68.42(a), the owner or operator of a stationary source subject to the risk management program regulations must document significant accidental releases of regulated substances from a covered process in the five years prior to the submission of an initial or updated risk management plan (RMP). For the five-year accident history, does

EPA RMP… Do the quantities of two separate vessels that are interconnected with a closed valve need to be aggregated for the worst-case release scenario analysis? 

Pursuant to the risk management program regulations, facilities must perform an offsite consequence analysis for the worst-case release scenario. Do the quantities of two separate vessels that are interconnected with a closed valve need to be aggregated for the worst-case release scenario analysis? 

EPA RMP… Are mechanical controls such as alarms considered administrative controls and therefore limit the worst-case release quantity?

For the purpose of analyzing the worst-case release scenario required as part of the hazard assessment at 40 CFR Part 68, Subpart B, the worst-case release quantity is identified as the greatest amount held in a single vessel or pipe, taking into account administrative controls that limit the maximum quantity (40 CFR §68.25(b)). Are mechanical

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